Egg cracked on day 25 badly on airsack end

[Tractormama95]

it is either day 25 or 26 the egg is completely cracked through on the air sack end I can see the duckling moving inside. Advice please

 

[kuchchicks]

Are these regular duck eggs? 28 day incubation? Are you in lock down? Make sure your humidity is high enough. You don't want the membrane to dry out. you can try using some tissue paper and Elmers (sp?) or clear nail polish to seal the crack. I did this a couple of hatches ago and it did help. You don't want to make the repair super thick in case that is where the duck decides to pip. Make sure that you keep a close eye on this one in case the membrane becomes too dry and you need to assist the hatch. Good luck.